请讲讲怎么使用HAL_SPI_Transmit（）；HAL_SPI_Receive（）；HAL_SPI_TransmitReceive（）；发送和接收一个Byte吗？
用的CUBEMX生成的SPI3的配置
void MX_SPI3_Init(void)
{
hspi3.Instance = SPI3;
hspi3.Init.Mode = SPI_MODE_MASTER;
hspi3.Init.Direction = SPI_DIRECTION_2LINES;
hspi3.Init.DataSize = SPI_DATASIZE_8BIT;
hspi3.Init.CLKPolarity = SPI_POLARITY_LOW;
hspi3.Init.CLKPhase = SPI_PHASE_1EDGE;
hspi3.Init.NSS = SPI_NSS_SOFT;
hspi3.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2;
hspi3.Init.FirstBit = SPI_FIRSTBIT_MSB;
hspi3.Init.TIMode = SPI_TIMODE_DISABLE;
hspi3.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
hspi3.Init.CRCPolynomial = 7;
hspi3.Init.CRCLength = SPI_CRC_LENGTH_DATASIZE;
hspi3.Init.NSSPMode = SPI_NSS_PULSE_DISABLE;
if (HAL_SPI_Init(&hspi3) != HAL_OK)
{
Error_Handler();
}
}
我下面这样写对吗？
void SPI_WriteByte(uint8_t TxData)
{
HAL_SPI_Transmit(&hspi3,&TxData,1,0xffff);
}
uint8_t SPI_ReadByte(uint8_t RxData)
{
HAL_SPI_Receive(&hspi3,RxData, 1, 0xffff);
} |
楼主
标题置顶
标题高亮
